Road Bike Clothing

For example, on my road bike for basic clothes that I wear every day I AVG about 14 mph when I'm riding in the middle above average pace ... How goes it with a machine of choice?

The faster you go, aerodynamics becomes more important. You do not really say what kind of setup you have, but good gear bike rack helps a lot. The stretch shorts with you, like a second skin. Nothing to prevent the movement of your legs. cycling jerseys fit close to your body, they do not flap in the wind. Cycling shoes have rigid soles, combined with cleats and clipless pedals, they send all your energy in transmission. You can rotate your feet faster, because they can not slip pedals. I do not know what kind of bike you have, how it suits you, and what state it is in. If none of these things need work, you may see a substantial increase in the rate of improvement of the efficiency. Hard to give exact figures, but you could be going faster for you.

Although there is a difference, I could not say. You provided perameters Savage. But you can get the answer yourself.

Ride 10 miles faster than you can in street clothes, note your time.

Now make the same journey in the same conditions wearing cycling clothing. If you do not wear a pair of shorts tight but comfortable and tight t-shirt. Note the time difference.

Since I do not know what clothes you wear every day you have to answer that person.

really not much. being more aerodynamic is mostly on how you sit on the bike. If you're crouching down with your hands on the drops, you will see a much better average speed, even if it is not as comfortable. bike shorts, a shirt and a helmet you could get a couple more mph.

Your own body will provide much more room for improvement, than buying a bunch of lycra bike drag 'costumes

WLE.